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Heat Treatment of Metal - Coggle Diagram
Heat Treatment of Metal
Heating and cooling metals to change their properties
Work hardening
A non-ferrous metal is constantly bent and hit over a period of time
deforming/hitting - change
Pros and cons
Annealing
Heating metal up after hardening to make it soft again - Less brittle
Easy to work with
Case Hardening of Mild Steel
Carbon added to the outside case of the steel
Heat steel - Red hot
Dip in compound - Carbon
Heat again and quench it in cold water
Quicker and less complex
Less accurate and precise
Hardening and Tempering of Tool Steel
Tempering metal makes hardened metal usable
Retains strength even with no brittleness
Metal has to be cleaned
It then gradually reheats
Changes colour
Cooled down by plunging it into cold water or oil